Some of the major transboundary rivers between the countries are Ganga, Brahmaputra, Teesta and Surma-Kushiara. Bangladesh is the downstream country for all these rivers.
The upper riparian countries are India, Bhutan, Nepal and China. Out of 1.72 square kilometres of catchment areas of these rivers, Bangladesh has 7%, and receives 1.5 billion metric-tonnes of sediment every year through its river systems, according to the JRC.
